Choose either method, let us know how you get on 1) Heat it up abit, and get a long hollow metal pole and slot it over the crank and use it for more leverage 2) Altnatively heat it up and hit it harder? 3) If you don't have access to a heatgun/blowtorch, put the crank in the freezer over night and either use your first method or the extra leverage method (Or follow them links)